STRUCT XILINX_DPDMA_TX_DESC(9)

okay so bestie, welcome to struct xilinx_dpdma_tx_desc(9) from the Kernel API Manual. it’s giving “DPDMA transaction descriptor” and we are gonna read every single field together, no cap. 🫶

✨ NAME ✨

struct xilinx_dpdma_tx_desc — DPDMA transaction descriptor. literally the name, the whole point, the main character. 💅

💖 SYNOPSIS 💖

here’s the struct in all its glory, copied exactly so nobody comes for us:

       struct xilinx_dpdma_tx_desc {
           struct virt_dma_desc vdesc;
           struct xilinx_dpdma_chan *chan;
           struct list_head descriptors;
           bool error;
        };

🎀 Members 🎀

okay field-by-field, because every member matters:

• vdesc — virtual DMA descriptor. the virtual DMA descriptor of the bunch. 🦋
• chan — DMA channel. that’s the DMA channel right there. 🎀
• descriptors — list of software descriptors. yes bestie, a whole list of software descriptors. 🌸
• error — an error has been detected with this descriptor. so this field means exactly that: an error has been detected with this descriptor. 😭

🌈 SEE ALSO 🌈

the kernel file is ./drivers/dma/xilinx/xilinx_dpdma.c — go peek, iykyk. and here’s the whole friend group, every single reference:

• struct xilinx_dpdma_hw_desc(9)
• struct xilinx_dpdma_sw_desc(9)
• struct xilinx_dpdma_chan(9)
• struct xilinx_dpdma_device(9)
• xilinx_dpdma_sw_desc_set_dma_addrs(9)
• xilinx_dpdma_chan_alloc_sw_desc(9)
• xilinx_dpdma_chan_free_sw_desc(9)
• xilinx_dpdma_chan_dump_tx_desc(9)
• xilinx_dpdma_chan_alloc_tx_desc(9)
• xilinx_dpdma_chan_free_tx_desc(9)
• xilinx_dpdma_chan_prep_cyclic(9)
• xilinx_dpdma_chan_prep_interleaved_dma(9)
• xilinx_dpdma_chan_enable(9)
• xilinx_dpdma_chan_disable(9)
• xilinx_dpdma_chan_pause(9)
• xilinx_dpdma_chan_unpause(9)
• xilinx_dpdma_chan_queue_transfer(9)
• xilinx_dpdma_chan_ostand(9)
• xilinx_dpdma_chan_notify_no_ostand(9)
• xilinx_dpdma_chan_wait_no_ostand(9)
• xilinx_dpdma_chan_poll_no_ostand(9)
• xilinx_dpdma_chan_stop(9)
• xilinx_dpdma_chan_done_irq(9)
• xilinx_dpdma_chan_vsync_irq(9)
• xilinx_dpdma_chan_err(9)
• xilinx_dpdma_chan_handle_err(9)
• xilinx_dpdma_alloc_chan_resources(9)
• xilinx_dpdma_free_chan_resources(9)
• xilinx_dpdma_terminate_all(9)
• xilinx_dpdma_synchronize(9)
• xilinx_dpdma_err(9)
• xilinx_dpdma_handle_err_irq(9)
• xilinx_dpdma_enable_irq(9)
• xilinx_dpdma_disable_irq(9)
• xilinx_dpdma_chan_err_task(9)

xoxo, your kernel bestie 💅 — this page lives in the Kernel API Manual, source/version ./drivers/dma/xilinx, dated October 2026, and it’s all about struct xilinx_dpdma_tx_desc(9). periodt. 🦋